Rostock 2019 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 23: Photonics I

Q 23.2: Talk

Monday, March 11, 2019, 16:30–16:45, S Ex 04 E-Tech

Homo-heterodyne detection of EIT in ¹⁶⁷Er:⁷LiYF₄ at sub-Kelvin temperatures — •Nadezhda Kukharchyk¹, Dmitriy Sholokhov², Oleg Morozov³, Stella L. Korableva³, Jared H. Cole⁴, Alexey A. Kalachev⁵, and Pavel A. Bushev¹ — ¹Microwave Quantum Systems, Universität des Saarlandes, Saarbrücken, Germany — ²Quantum Photonic Universität des Saarlandes, Saarbrücken, Germany — ³Kazan Federal University, Kazan, Russian Federation — ⁴Chemical and Quantum Physics, School of Science, RMIT University, Melbourne, Australia — ⁵Zavoisky Physical-Technical Institute, Kazan, Russian Federation

We demonstrate the microwave approach in optical measurements. While typical application of Mach-Zehnder Modulator to control optical frequency requires filtering of a carrier and negative side-band, we do the heterodyne detection with unfiltered carrier in a perfect phase matching regime. This implies a particular data processing scheme, which allows an accurate determining of amplitude, phase, and absorption coefficient. We demonstrate application of this method in spectroscopic measurements[1], as well as for EIT in isotopically purified ¹⁶⁶Er:⁷LiYF₄ and ¹⁶⁷Er:⁷LiYF₄.

[1] N. Kukharchyk, D. Sholokhov, O. Morozov, S. L. Korableva, J. H. Cole, A. A. Kalachev, and P. A. Bushev, "Optical vector network analysis of ultranarrow transitions in ¹⁶⁶Er³⁺:⁷LiYF₄ crystal", Opt. Lett. 43, 935-938 (2018)